interconnect: imx: Add platform driver for imx8mp

Add a platform driver for the i.MX8MP SoC describing bus topology, based
on internal documentation.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20220703091132.1412063-9-peng.fan@oss.nxp.com


Signed-off-by: Georgi Djakov <djakov@kernel.org>